where the parameters \(c_1\) , \(c_2\) , and \(w\)  are fit to the speed of sound and its derivative at \(n_{\rm tr}\) , and also to the demands \(v_{\rm s}(n_{\rm tr})=[c/\sqrt{3},c]\)  [1]} according to the value of \(\alpha \) . Using Eq. (REF ), the EoS for \(n \ge n_{{\rm tr}}\)  can be constructed with the help of the following recipe [2]}
\({\cal E}_{i+1} = {\cal E}_i+\Delta {\cal E}, \quad P_{i+1} = P_i+\left(\frac{v_s}{c}(n_i)\right)^2\Delta {\cal E},\) 
\(\Delta {\cal E} = \Delta n\left(\frac{{\cal E}_i+P_i}{n_i} \right),\) 
\(\Delta n = n_{i+1}-n_i.\) 
